650378539 has 2 divisors, whose sum is σ = 650378540. Its totient is φ = 650378538.

The previous prime is 650378473. The next prime is 650378551. The reversal of 650378539 is 935873056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650378539 - 2⁷ = 650378411 is a prime.

It is not a weakly prime, because it can be changed into another prime (650372539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325189269 + 325189270.

It is an arithmetic number, because the mean of its divisors is an integer number (325189270).

Almost surely, 2^650378539 is an apocalyptic number.

650378539 is a deficient number, since it is larger than the sum of its proper divisors (1).

650378539 is an equidigital number, since it uses as much as digits as its factorization.

650378539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 650378539 is about 25502.5202480069. The cubic root of 650378539 is about 866.4072292647.

The spelling of 650378539 in words is "six hundred fifty million, three hundred seventy-eight thousand, five hundred thirty-nine".